/* ============================================================
   亚星官网 - 全局样式表
   设计体系：沉稳深蓝 + 品牌金，企业级 B2B 官网
   ============================================================ */

:root{
  --navy-900:#0e2233;
  --navy-800:#16324a;
  --navy-700:#1e4058;
  --navy-600:#2a4d68;
  --gold:#c9a24b;
  --gold-soft:#dcbf7e;
  --gold-deep:#a8873a;
  --ink:#22303c;
  --text:#43525f;
  --muted:#7b8794;
  --bg:#f5f7fa;
  --white:#ffffff;
  --line:#e2e8ef;
  --radius:10px;
  --shadow-sm:0 2px 8px rgba(14,34,51,.08);
  --shadow-md:0 10px 30px rgba(14,34,51,.10);
  --container:1200px;
  --font-family:"Microsoft YaHei","PingFang SC","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font-family);
  color:var(--text);
  background:var(--bg);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:12px 28px;border-radius:var(--radius);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:all .22s ease;line-height:1.2;
}
.btn-gold{background:var(--gold);color:#fff;}
.btn-gold:hover{background:var(--gold-deep);}
.btn-outline{border-color:var(--gold);color:var(--gold);background:transparent;}
.btn-outline:hover{background:var(--gold);color:#fff;}
.btn-light{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.55);}
.btn-light:hover{background:#fff;color:var(--navy-800);border-color:#fff;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;background:#fff;
  border-bottom:1px solid var(--line);box-shadow:var(--shadow-sm);
}
.header-inner{
  max-width:var(--container);margin:0 auto;padding:0 24px;
  display:flex;align-items:center;justify-content:space-between;height:70px;
}
.logo{display:flex;align-items:center;gap:12px;}
.logo-mark{
  width:42px;height:42px;border-radius:9px;flex:none;
  background:linear-gradient(135deg,var(--navy-800),var(--navy-600));
  display:flex;align-items:center;justify-content:center;color:var(--gold);
  font-size:20px;font-weight:800;letter-spacing:.5px;
}
.logo-text{line-height:1.25;}
.logo-text b{font-size:20px;color:var(--navy-900);letter-spacing:1px;font-weight:800;}
.logo-text span{display:block;font-size:11px;color:var(--muted);letter-spacing:2px;}
.site-nav{display:flex;gap:6px;align-items:center;}
.site-nav a{
  position:relative;padding:8px 14px;font-size:15px;color:var(--ink);
  border-radius:6px;transition:color .2s;
}
.site-nav a:hover{color:var(--gold-deep);}
.site-nav a.active{color:var(--gold-deep);font-weight:600;}
.site-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--gold);border-radius:2px;
}
.nav-toggle{
  display:none;width:42px;height:42px;border:none;background:transparent;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--navy-800);border-radius:2px;transition:.3s;}

/* 页内横幅（子页） */
.page-banner{
  position:relative;padding:88px 0 72px;color:#fff;overflow:hidden;
  background:linear-gradient(120deg,var(--navy-900),var(--navy-700));
}
.page-banner::after{
  content:"";position:absolute;right:-80px;top:-80px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,162,75,.28),transparent 65%);
}
.page-banner .container{position:relative;z-index:2;}
.crumbs{font-size:13px;color:rgba(255,255,255,.75);margin-bottom:14px;letter-spacing:.5px;}
.crumbs a{color:var(--gold-soft);}
.crumbs a:hover{text-decoration:underline;}
.crumbs .sep{margin:0 8px;color:rgba(255,255,255,.5);}
.page-banner h1{font-size:38px;font-weight:800;letter-spacing:1px;}
.page-banner .banner-sub{margin-top:12px;max-width:720px;font-size:16px;color:rgba(255,255,255,.85);}

/* ---------- 通用区块 ---------- */
.section{padding:76px 0;}
.section.alt{background:#fff;}
.section-head{max-width:820px;margin:0 auto 46px;text-align:center;}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:3px;color:var(--gold-deep);font-weight:600;margin-bottom:12px;}
.section-head h2{font-size:30px;font-weight:800;color:var(--navy-900);letter-spacing:.5px;}
.section-head .lead{margin-top:14px;color:var(--text);font-size:16px;}
.section-head .lead a{color:var(--gold-deep);}
.grid{display:grid;gap:24px;}
.cols-2{grid-template-columns:repeat(2,1fr);}
.cols-3{grid-template-columns:repeat(3,1fr);}
.cols-4{grid-template-columns:repeat(4,1fr);}

/* ---------- 卡片 ---------- */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:transform .25s ease,box-shadow .25s ease;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);}
.card-media{overflow:hidden;aspect-ratio:16/10;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.card:hover .card-media img{transform:scale(1.05);}
.card-body{padding:22px 22px 24px;}
.card-body h3{font-size:18px;color:var(--navy-900);font-weight:700;margin-bottom:8px;}
.card-body p{font-size:14.5px;color:var(--text);line-height:1.7;}
.card-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--muted);margin-bottom:10px;}
.tag{display:inline-block;padding:2px 10px;border-radius:20px;font-size:12px;font-weight:600;background:rgba(201,162,75,.14);color:var(--gold-deep);}
.link-more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;font-weight:600;color:var(--gold-deep);}
.link-more:hover{color:var(--navy-700);}

/* ---------- 首页 Hero ---------- */
.hero{
  position:relative;min-height:620px;display:flex;align-items:center;color:#fff;overflow:hidden;
}
.hero-bg{position:absolute;inset:0;}
.hero-bg img{width:100%;height:100%;object-fit:cover;}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(14,34,51,.90),rgba(14,34,51,.55) 55%,rgba(14,34,51,.25));}
.hero-inner{position:relative;z-index:2;max-width:var(--container);margin:0 auto;padding:110px 24px;}
.hero-kicker{font-size:14px;letter-spacing:4px;color:var(--gold-soft);font-weight:600;margin-bottom:18px;}
.hero h1{font-size:50px;line-height:1.18;font-weight:800;letter-spacing:1px;max-width:760px;}
.hero h1 .em{color:var(--gold-soft);}
.hero p{margin:22px 0 34px;font-size:17px;max-width:620px;color:rgba(255,255,255,.9);line-height:1.8;}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;}
.hero-stats{position:relative;z-index:2;background:rgba(255,255,255,.08);backdrop-filter:blur(2px);border-top:1px solid rgba(255,255,255,.18);}
.stats-inner{max-width:var(--container);margin:0 auto;padding:26px 24px;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.stat{text-align:center;}
.stat b{display:block;font-size:30px;font-weight:800;color:var(--gold-soft);}
.stat span{font-size:13px;color:rgba(255,255,255,.85);}

/* ---------- 首页简介 ---------- */
.intro{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center;}
.intro-media{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md);}
.intro-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;}
.intro h2{font-size:28px;color:var(--navy-900);font-weight:800;margin-bottom:18px;letter-spacing:.5px;}
.intro p{margin-bottom:14px;}
.intro-feats{margin-top:22px;display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.intro-feats li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--ink);}
.intro-feats li::before{content:"✔";color:var(--gold-deep);font-weight:700;flex:none;}

/* ---------- 流程/数字序列 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step;}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;position:relative;
}
.step::before{
  counter-increment:step;content:"0" counter(step);
  font-size:34px;font-weight:800;color:rgba(201,162,75,.28);line-height:1;display:block;margin-bottom:14px;
}
.step h3{font-size:17px;color:var(--navy-900);margin-bottom:8px;font-weight:700;}
.step p{font-size:14px;color:var(--text);}

/* ---------- 表格 ---------- */
.table-wrap{overflow-x:auto;}
table.data{width:100%;border-collapse:collapse;table-layout:fixed;background:#fff;border:1px solid var(--line);border-radius:var(--radius);}
table.data th,table.data td{padding:14px 16px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line);font-size:14.5px;}
table.data thead th{background:var(--navy-800);color:#fff;font-weight:600;}
table.data tbody tr:last-child td{border-bottom:none;}
table.data tbody tr:nth-child(even){background:#fafcfe;}

/* ---------- 列表页（新闻/案例） ---------- */
.list-rows{display:grid;gap:20px;}
.row-item{
  display:grid;grid-template-columns:250px 1fr;gap:22px;align-items:stretch;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:box-shadow .25s;
}
.row-item:hover{box-shadow:var(--shadow-md);}
.row-media{aspect-ratio:auto;overflow:hidden;}
.row-media img{width:100%;height:100%;object-fit:cover;}
.row-body{padding:20px 22px;display:flex;flex-direction:column;justify-content:center;}
.row-body h3{font-size:19px;color:var(--navy-900);font-weight:700;margin-bottom:8px;}
.row-body h3 a:hover{color:var(--gold-deep);}
.row-body p{font-size:14.5px;color:var(--text);}

/* ---------- 客户背书 ---------- */
.quote{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 28px;display:flex;flex-direction:column;gap:18px;
}
.quote-mark{font-size:40px;color:var(--gold);line-height:1;font-family:Georgia,serif;}
.quote blockquote{font-size:16px;color:var(--ink);line-height:1.85;font-style:normal;}
.quote blockquote::before{content:"“";}
.quote blockquote::after{content:"”";}
.quote-by{display:flex;align-items:center;gap:14px;border-top:1px solid var(--line);padding-top:16px;}
.quote-avatar{
  width:48px;height:48px;border-radius:50%;flex:none;background:var(--navy-800);
  color:var(--gold-soft);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;
}
.quote-by b{display:block;color:var(--navy-900);font-size:15px;}
.quote-by span{font-size:13px;color:var(--muted);}
.rating{color:var(--gold);letter-spacing:2px;font-size:14px;}

/* ---------- 关于我们 ---------- */
.about-block{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.about-block h2{font-size:28px;color:var(--navy-900);font-weight:800;margin-bottom:18px;}
.about-block p{margin-bottom:14px;}
.values{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.value{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 20px;text-align:center;}
.value .v-icon{width:54px;height:54px;margin:0 auto 14px;border-radius:12px;background:rgba(201,162,75,.14);color:var(--gold-deep);display:flex;align-items:center;justify-content:center;}
.value h3{font-size:17px;color:var(--navy-900);font-weight:700;margin-bottom:6px;}
.value p{font-size:13.5px;color:var(--text);}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;margin:10px 0;}
.timeline::before{content:"";position:absolute;left:14px;top:6px;bottom:6px;width:2px;background:var(--line);}
.tl-item{position:relative;padding:0 0 30px 52px;}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{position:absolute;left:7px;top:6px;width:16px;height:16px;border-radius:50%;background:var(--gold);border:3px solid #fff;box-shadow:0 0 0 2px var(--gold);}
.tl-item h3{font-size:17px;color:var(--navy-900);font-weight:700;}
.tl-item time{display:inline-block;font-size:13px;color:var(--gold-deep);font-weight:600;margin:2px 0 6px;}
.tl-item p{font-size:14.5px;color:var(--text);}

/* ---------- 联系我们 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:40px;}
.contact-info{display:grid;gap:18px;}
.info-item{display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;}
.info-icon{width:46px;height:46px;flex:none;border-radius:11px;background:var(--navy-800);color:var(--gold-soft);display:flex;align-items:center;justify-content:center;}
.info-item b{display:block;color:var(--navy-900);font-size:16px;margin-bottom:3px;}
.info-item span{font-size:14.5px;color:var(--text);}
.contact-form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;}
.contact-form h3{font-size:20px;color:var(--navy-900);margin-bottom:20px;font-weight:700;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13.5px;color:var(--ink);margin-bottom:6px;font-weight:600;}
.field input,.field textarea,.field select{
  width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:8px;
  font-size:14.5px;font-family:inherit;color:var(--ink);background:#fbfcfd;transition:border .2s;
}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--gold);background:#fff;}
.field textarea{resize:vertical;min-height:130px;}

/* ---------- CTA 区 ---------- */
.cta-band{background:linear-gradient(120deg,var(--navy-900),var(--navy-700));color:#fff;padding:56px 0;text-align:center;}
.cta-band h2{font-size:28px;font-weight:800;letter-spacing:.5px;}
.cta-band p{margin:14px auto 28px;max-width:640px;color:rgba(255,255,255,.85);}
.cta-band .btn-gold{color:#fff;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--navy-900);color:rgba(255,255,255,.78);padding:56px 0 30px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.12);}
.footer-brand .logo-mark{background:rgba(255,255,255,.08);}
.footer-brand .logo-text b{color:#fff;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;max-width:320px;}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:18px;font-weight:700;letter-spacing:.5px;}
.footer-col li{margin-bottom:11px;}
.footer-col a{font-size:14px;transition:color .2s;}
.footer-col a:hover{color:var(--gold-soft);}
.footer-bottom{max-width:var(--container);margin:0 auto;padding:24px 24px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.55);}

/* ---------- 返回顶部 / 搜索 ---------- */
.back-top{
  position:fixed;right:26px;bottom:30px;width:46px;height:46px;border-radius:12px;
  background:var(--navy-800);color:#fff;border:none;cursor:pointer;display:none;
  align-items:center;justify-content:center;box-shadow:var(--shadow-md);z-index:90;
}
.back-top.show{display:flex;}
.search-bar{display:flex;gap:10px;max-width:460px;margin:0 auto;}
.search-bar input{flex:1;padding:12px 16px;border:1px solid var(--line);border-radius:8px;font-size:14.5px;}
.search-bar button{}

/* ---------- 响应式 ---------- */
@media (max-width:992px){
  .cols-4{grid-template-columns:repeat(2,1fr);}
  .cols-3{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .values{grid-template-columns:repeat(2,1fr);}
  .intro,.about-block{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .contact-grid{grid-template-columns:1fr;}
  .hero h1{font-size:40px;}
  .row-item{grid-template-columns:1fr;}
  .row-media{aspect-ratio:16/9;}
}
@media (max-width:720px){
  .site-nav{
    position:fixed;top:70px;left:0;right:0;background:#fff;flex-direction:column;
    padding:16px 24px 24px;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-md);transform:translateY(-130%);transition:transform .3s ease;
  }
  .site-nav.open{transform:translateY(0);}
  .site-nav a{width:100%;padding:13px 8px;border-bottom:1px solid var(--line);font-size:16px;}
  .site-nav a.active::after{display:none;}
  .nav-toggle{display:flex;}
  .cols-2,.cols-3,.cols-4,.steps,.values{grid-template-columns:1fr;}
  .stats-inner{grid-template-columns:repeat(2,1fr);gap:18px;}
  .hero h1{font-size:32px;}
  .hero{min-height:0;padding:0;}
  .hero-inner{padding:90px 24px 70px;}
  .page-banner h1{font-size:28px;}
  .section-head h2{font-size:24px;}
  .form-row{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .intro-feats{grid-template-columns:1fr;}
  .timeline::before{left:11px;}
  .tl-dot{left:4px;}
}

/* 减少动效偏好 */
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}